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Fig. 3. Scaling relationship between whole-body O2 consumption rates and
body mass in Pseudis paradoxus tadpoles and froglets exposed to
normoxic (146 mmHg; mean of initial values) and hypoxic water (60 mmHg), at
25°C. Each point represents a single animal, staged according to Cais
after Gosner (Cais, 1982;
Gosner, 1960) and measured
individually. Filled circles represent larval stages 33–42, grey
triangles larval stages 43–45, and empty triangles froglets (stage 46).
The data were log-transformed and used to calculate two separate linear
regressions that correspond to growth (broken line) and degrowth phases (solid
line) of the larval period; the line has been omitted where the correlation is
not significant. Detailed descriptions of determination coefficients and
statistics are given in the text.
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